<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">
  <title>three</title>
</head>
<script>
  (function () {
    function resize() {
      let w = document.documentElement.clientWidth
      if (w > 750) {
        document.documentElement.style.fontSize = '200px'
        return
      }
      document.documentElement.style.fontwSize = w / 375 * 100 + 'px'
    }
    resize()
    window.resize = resize
  })()
</script>

<body>
  <div id="app"></div>
  <!-- built files will be auto injected -->
</body>

</html>